Hobbs, Christopher,  1944- <br/><br/>
Echinacea :  the immune herb  
[by Christopher Hobbs]. 
 - 2nd ed. 
 - Santa Cruz, CA :  Botanica Press,  1995, c1990. 
 - 83 p. :  ill. (some col.) ;  21 cm. 
 - Herbs and health series .
 - Hobbs, Christopher,  1944-  Herbs and health. .
<br/><br/> "Revised edition"--Cover. 
<br/><br/>Includes bibliographical references (p. 76-82). 
<br/><br/><label>ISBN: </label>1884360033 (pbk.) :  5.95